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Photovoltaics in EMS Sector

http://circuitsassembly.com/cms/component/content/article/199/7190-photovoltaics-in-ems-sector This article isn’t ‘hot off the press’, but it is worthy of review. In the October

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Photovoltaics in EMS Sector

http://circuitsassembly.com/cms/component/content/article/199/7190-photovoltaics-in-ems-sector This article isn't 'hot off the press', but it is worthy of review. In the October 2008

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Au/Sn Sputtering Targets

In addition to Au/Sn sputtering pucks, Indium Corporation can also manufacture full size Au/Sn sputtering targets. 80Au/20Sn is a versatile solder that is used in a wide variety of specialty

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Solderspatter: Solder Paste in Unexpected Places

Figure 1: Solderspatter (soldersplash) on Gold/Nickel Figure 2: Phase Inversion during Reflow Most people are aware that solder paste is a mixture of solder powder and a flux

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Theory of “Ball Drop” Sphere Placement

After transferring flux, align the stencil Setup print parameters to minimize doubles and missing solder spheres Remove stencil, substrate/die should be ready for inspection and reflow Spheres can be

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Is Sn/Cu Alloy a Good Choice for Solder Paste?

Folks I was chatting recently with Indium Corporation's Mike Fenner about Sn/Cu alloys for solder paste.Mike has many years of experience and I value his opinions greatly. Here is a summary of

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Indium and Flip Chip Bonding

Au stud bumped flip chip attachment? Low temperature assembly requirements? Indium is your answer… Indium can be used in many ingenious ways to attach flip chips. It can be used for solder

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Indium Phase Diagrams

If you deal with indium, this is a book for you. “Phase Diagrams of Indium Alloys and Their Engineering Applications” has information about pure indium and indium

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Solderability Testing of Die-Attach Solder Paste

Diagram of Solder-Dipping Test Apparatus Solder-wetting Curve Interesting question from a Power Semiconductor customer this week about how to test solder paste for use in Power die-attach

Archive

Ed Briggs Weighs in on “Graping”

Folks, Recently I caught up with Ed Briggs, a member of Indium Corporation's technical staff. I asked Ed if he would share with us his thoughts on "graping" and how to minimize it. His

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Liquid Metal Thermal Interface Materials 1

Liquid thermal interface materials are available in two forms: The major difference between the two is in the temperature which these alloys become molten. Liquid metals remain molten at room

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Indium Foil – a Thermal Interface Material

Indium Foil used as a thermal interface can easily be handled with pick and place tools. Never worked with indium foil and wondering, "What's all the hype about?" In many ways, indium

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Hand Soldering Tip Temperatures

How hot are you setting your solder iron for hand soldering using solder wire or preforms? If you are cranking up the solder iron temperature because you have transitioned to lead-free solders, think

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Indium Bonding and Indium Cold Welding

In recent days, one of my fellow applications engineers, Jim Hisert posted a blog on his semiconductor website about indium bonding and indium cold welding. This is a topic that comes up often both

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Stock Up

I recently visited a customer to help optimize a flux-less indium soldering application. They admitted they needed flux but didn’t know 1) what to use, or 2) if there was a better way to fix

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Pin Transfer Basics

This is the shape of flux deposits left after pin transfer Spheres attached after pin transfer Pin transfer is a way of selectively depositing a semi-solid or liquid material (like a solder paste or

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Determine Solidus and Liquidus Temperatures of Solder Thermal Interface Materials

As previously posted, Indiums Table of Specialty Alloys and Solders contains hundreds of solder alloys used as thermal interface materials and for each of them, we have listed melting temperatures.

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Determine Solidus and Liquidus Temperatures of Solder Alloys

As previously posted, Indiums Table of Specialty Alloys҂and solderscontains hundreds of solder alloys and for each of them, we have listed melting temperatures. The method by which these were

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Attention Thermal Testers

Looking for ways to troubleshoot or optimize your Thermal Interface materials? One method which we have contrived to determine the performance of your thermal stack-up excluding thethermal interface

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Au/Sn (Everyone’s Best Friend)

Our engineering group recently recieved a personal win when a prospective customer we have been working with for years finally took notice of out Au/Sn advancements and agreed to run a full

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Clad Thermal Interface Materials

Continuing with the topic of thermal interface material options, a popular material choice is a clad metal thermal interface preform including multiple layers of various metals, or a metal preform

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